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Edison's incandescent lamps showing various forms of carbon filament, 1883.
Johannes Kepler, German astronomer, c1600, (c1870).
Henri Giffard's steam powered steerable (dirigible) airship, 1852.
Central Telephone Exchange, Paris, 1883.
Lesage experimenting with the first electric telegraph, Geneva, 1774 (1876).
Lesage experimenting with the first electric telegraph, Geneva, 1774 (c1870).
Street in Newcastle Upon Tyne lit by Swan incandescent electric lamps, 1883.
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